Lamp.



G. K. MALTBY.

LAMP.

APPLICATION FILED NOV. Is. 1916.

Patented Aug. 20, 1918- INVEIVTOR IE lmHRs PEYERS cu. r-nam-umcu wasumarau, n, c.

GEORGE K. MALTBY, OF NEW YORK, N. Y.

LAMP.

Application filed November 16, 1918.

To all whom it may concern:

Be it known that I, GEORGE K. MALTBY, a citizen of the United States, residing in the city, county, and State of New York, have invented certain new and useful Improvements in Lamps, of which the following is a full, clear, and complete disclosure.

My invention relates to lamps and particularly to reflectors or shades for lamps and is an improvement on the device described in my pending application Serial No. 78,584. My improved lamp herein described and claimed, comprises a source of light in combination with a plurality of inverted trough-shaped reflector members disposed radially around the light and adapted to concentrate a relatively intense light on a plurality of separate points or areas surrounding the lamp, while at the same time providing a certain amount of general illumination both beneath and above the lamp. T he lamp also comprises other improved features to which I will later refer.

In the drawing accompanying and forming a part of this specification, I have shown the preferred embodiment of my invention and its construction, uses and advantages will readily be understood from a description of this preferred embodiment.

Referring to the drawing, Figure 1 is an elevation of the complete lamp, the reflector being shown in vertical section; F 2 is a top view of the structure shown in Fig. 1, taken on the line 2-2 of that figure; Fig. 3 is a detail view of one of the trough or channel shaped reflector members employed to concentrate light rays on a plurality of separate points or areas around the lamp; Fig. i is a detail view showing the means employed for adjustably supporting the trough-- shaped reflector members; Fig. 5 is a detail view showing the arrangement employed when the lamp is supported from the top.

Referring in detail to the drawing, the lamp comprises a source of light in the form of an electric bulb 1 supported on a standard or support It also comprises a reflector 3 formed of a plurality of trough shaped re- Hector members a each provided with a wing These wings overlap each other and are secured to and supported by the arms 6. These arms 6 at their inner ends are pivotallv secured to the arms 7 by thumb screws 8. By releasing these screws and also the set screws 9 employed to clamp the Specification of Letters Patent.

Patented Aug. 20, 1918. Serial No. 131,651.

flanges 5 to each other, the individual trough-shaped reflectors a may be raised or lowered at their outer ends so as to extend or contract the distance the light projected by them will travel in a horizontal direction. It is frequently the case that no light is desired on the space immediately below the lamp, and I therefore provide a coneshaped reflector 10 disposed beneath the lamp and adapted to project outwardly the rays which otherwise would fall on the space beneath the lamp. The reflector 10 is slidably mounted on the column 12 and may be adjusted vertically by loosening set screw 13.

As above explained, the trough-shaped re flectors gather rays of light from the incandescent bulb and concentrate such light on a plurality of areas around the base of the lamp. This gives an intense illumination on such areas. general illumination of the space beneath the lamp is eiiected by the rays moving so as to strike the wing members and also by direct illumination from the lamp and by such rays as fall on and are reflected by the small reflector 10. General illumination is also provided by the reflector cap 11 adjustably mounted directly over the light 1.

My improved lamp may be supported on a desk. table, etc., by a support 2 or from the ceiling. in which case it is constructed as shown in Fig. 5.

While I have described only the preferred embodiment of my invention, it is obvious that many changes in the construction and arrangement of the device may be made without departing from the scope of my claims.

What I claim is 1. In a lamp of the kind described, a source of light, a plurality of inverted trough shaped reflector members disposed radially around the light, said members having conical flanges at the sides of the trough shaped portions, the flanges of one of said members overlapping those of the adjacent members, and means for binding said flanges together.

2. In a lamp of the kind described, a source of light, a plurality of vertically adjustable inverted trough shaped reflector members disposed radially around the light, said members having conical flanges at the sides of the trough shaped portions. the flanges of one of said members overlappmg those of the adjacent members, and means for binding said flanges tegethei'.

3. In a lamp of the kind described in corn hinution, a SOULCB of light, a phn-aiityef inverted trough shaped reflector ineinbei's dis- DOSGd radially around the light upwardly and. downwardly inclined zii'ins pivoted at 0f 222 .115 gia zeu i may obtained for five their upper ends said members hax' ing c0ni- 0111 flanges thereon to which eaid arms are seemed, the flanges on each of said members overlapping the flanges on the adjacent inomhers, and means: for binding said flanges iOgEtilQl in adjusted relation;

GEORGE K. l /IALTBY.

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Washington. D. C. 

